We have installed our first Cluster environment on Win2k3 with a 2 node setup. (SQL2KSP3)

Had a few questions .

1. What should be the state of SQL Services on both machines (Automatic/Manual )

2. If I stop SQL Service on First node (active) would that make the SQL Services to Fail over to 2nd Node ?
3. What happens to long running transactions ?

4. Users connections ? do they get disconnected and have to reconnect or it is automatic